Annie Elise

Like what's going on here?

And sure enough, surveillance footage shows Nick just calmly walking near his parents' house in their neighborhood right before midnight on Saturday night when this all went down.

He's in jeans, a long-sleeved shirt, a baseball cap, a backpack, and he just looks completely normal, totally unfazed, not frantic, not pacing, just walking.

And that's wild because...

Other footage was taken at a gas station only a few blocks away from the family's home.

And this was hours before.

And knowing what we know now happened later, it's one of those moments where you kind of like stop and say, what's the timeline here?

Because in this footage, he's buying things in this convenience store.

He's acting very calm.

Very collected.

We know he then went to the house and allegedly did what he did.

Then he's seen walking around the neighborhood.

It's just weird.

And that surveillance footage from the convenience store, like I said, was hours before the murders happened.

And nobody ever would have guessed that just hours later, you know, his parents Rob and Michelle would be dead.

Which that's not even the only thing that came out about that night.

Here's another piece of the timeline that matters.

According to TMZ, earlier that same evening, Nick reportedly got into a very heated argument with his dad Rob at Conan O'Brien's Christmas party.

I guess Conan has a party every year.

He invites, you know, A-list celebrities, comedians, the works.